ITU-T. G Amendment 5 (04/2010)

Transcription

1 International Telecommunication Union ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU G Amendment 5 (04/2010) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital sections and digital line system Access networks Handshake procedures for digital subscriber line (DSL) transceivers Amendment 5: Mandatory tone set for HPE17 and HPE30, and codepoints in support of Recommendations ITU-T G and ITU-T G Recommendation ITU-T G (2007) Amendment 5

2 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER- TRANSMISSION SYSTEMS INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON METALLIC LINES GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON RADIO-RELAY OR SATELLITE LINKS AND INTERCONNECTION WITH METALLIC LINES COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONY TRANSMISSION MEDIA AND OPTICAL SYSTEMS CHARACTERISTICS DIGITAL TERMINAL EQUIPMENTS DIGITAL NETWORKS DIGITAL SECTIONS AND DIGITAL LINE SYSTEM General Parameters for optical fibre cable systems Digital sections at hierarchical bit rates based on a bit rate of 2048 kbit/s Digital line transmission systems on cable at non-hierarchical bit rates Digital line systems provided by FDM transmission bearers Digital line systems Digital section and digital transmission systems for customer access to ISDN Optical fibre submarine cable systems Optical line systems for local and access networks Access networks MULTIMEDIA QUALITY OF SERVICE AND PERFORMANCE GENERIC AND USER- RELATED ASPECTS TRANSMISSION MEDIA CHARACTERISTICS DATA OVER TRANSPORT GENERIC ASPECTS PACKET OVER TRANSPORT ASPECTS ACCESS NETWORKS G.100 G.199 G.200 G.299 G.300 G.399 G.400 G.449 G.450 G.499 G.600 G.699 G.700 G.799 G.800 G.899 G.900 G.999 G.900 G.909 G.910 G.919 G.920 G.929 G.930 G.939 G.940 G.949 G.950 G.959 G.960 G.969 G.970 G.979 G.980 G.989 G.990 G.999 G.1000 G.1999 G.6000 G.6999 G.7000 G.7999 G.8000 G.8999 G.9000 G.9999 For further details, please refer to the list of ITU-T Recommendations.

3 Recommendation ITU-T G Handshake procedures for digital subscriber line (DSL) transceivers Amendment 5 Mandatory tone set for HPE17 and HPE30, and codepoints in support of Recommendations ITU-T G and ITU-T G Summary Amendment 5 to Recommendation ITU-T G (2007) contains: The mandatory tone set for the HPE17 and HPE30 bandplan. Additional codepoints for the support of Recommendations ITU-T G and ITU-T G History Edition Recommendation Approval Study Group 1.0 ITU-T G ITU-T G (1999) Cor ITU-T G ITU-T G ITU-T G ITU-T G (2003) Amend ITU-T G (2003) Amend ITU-T G (2003) Amend ITU-T G (2003) Amend ITU-T G ITU-T G (2007) Amend ITU-T G (2007) Amend ITU-T G (2007) Amend ITU-T G (2007) Amend ITU-T G (2007) Amend Rec. ITU-T G (2007)/Amd.5 (04/2010) i

4 FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-T's purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression "Administration" is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words "shall" or some other obligatory language such as "must" and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at ITU 2010 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. ii Rec. ITU-T G (2007)/Amd.5 (04/2010)

5 Recommendation ITU-T G Handshake procedures for digital subscriber line (DSL) transceivers Amendment 5 Mandatory tone set for HPE17 and HPE30, and codepoints in support of Recommendations ITU-T G and ITU-T G ) Mandatory tone set for HPE17 and HPE30 Modify clause as follows: khz signalling family Carrier frequencies within this signalling family are given by N khz, where N is a positive integer. The symbol rate shall be / symbols per second. Within this family, there are several upstream carrier sets, designated A43, B43, C43, J43, V43 and their variants. Each upstream carrier set has an associated downstream carrier set that carries the same designation. The carrier set frequencies and the maximum transmit power level per carrier for each carrier set are defined in Table 1 where frequency = N khz. The carrier sets in this family are mandatory for the xdsl modes listed in Table 2. One or more carriers listed in Tables 1 or 3 may be transmitted in addition to the mandatory carrier set listed in Table 2. Carriers not listed in Tables 1 or 3 shall not be transmitted. Table 1 Carrier sets for the khz signalling family Upstream carrier sets Downstream carrier sets Carrier set designation A43 (Notes 1, 3, 4, 5) A43c (Notes 1, 3, 4) Frequency indices (N) Maximum power level/carrier (dbm) Frequency indices (N) Maximum power level/carrier (dbm) Transmission mode 9, 17, , 56, Duplex only 9, 17, , 293, Duplex only B43 37, 45, , 88, Duplex only B43c (Note 1) 37, 45, , 293, Duplex only C43 7, , 14, Duplex only J43 9, 17, , 88, Duplex only V43 (Notes 1, 2) V43P (Note 1) V43I (Note 1) 944, 972, , 383, Duplex only 9, 17, , 383, Duplex only 37, 45, , 383, Duplex only Rec. ITU-T G (2007)/Amd.5 (04/2010) 1

6 Table 1 Carrier sets for the khz signalling family Upstream carrier sets Downstream carrier sets Carrier set designation V43-S (Notes 1, 2) V43P-S (Note 1) V43I-S (Note 1) Frequency indices (N) Maximum power level/carrier (dbm) Frequency indices (N) Maximum power level/carrier (dbm) Transmission mode 944, , Duplex only 17, , Duplex only 45, , Duplex only NOTE 1 In some jurisdictions, it may be necessary to limit the maximum downstream power level, for example dbm/carrier where the PSD is limited to 60 dbm/hz. NOTE 2 It is expected that sufficient power back-off is applied to the upstream carriers of short lines to avoid excessive crosstalk into adjacent pairs during ITU-T G NOTE 3 In some jurisdictions, it may be necessary to shape the power of the downstream carriers in order to be compliant with PSD masks enforced by regulation. NOTE 4 In some jurisdictions, it may be necessary to send either A43 or A43C carrier sets, or both simultaneously, with appropriate shaping, leaving the receiver to select which carrier set to use. NOTE 5 If the bandplan HPE17 or HPE30 is supported, the maximum power level of the subcarriers of the carrier set is reduced. Power level for downstream sub-carrier indices 40, 56, and 64 shall be less than dbm, dbm, and dbm respectively. Power level for upstream sub-carriers indices 9, 17 and 25 shall be less than 3.65 dbm, dbm, and 11.7 dbm respectively. Table 2 Mandatory carrier sets xdsl Recommendation(s) ITU-T G Annex A ITU-T G Annexes A/B ITU-T G Annexes A/I/L ITU-T G Annexes A/I ITU-T G Annexes A/I ITU-T G where support of a profile requiring US0 (Note 4) ITU-T G with support of Annex B bandplan HPE17 or HPE30 ITU-T G Annexes A/I (Note 1) ITU-T G Annexes J/M (Note 2) ITU-T G where support of a profile requiring US0 (Notes 1, 4) ITU-T G Annex B ITU-T G Annex B ITU-T G Annex B ITU-T G where support of a profile requiring US0 (Note 4) ITU-T G Annex B (Note 3) Carrier set designation A43 A43c B43 B43c 2 Rec. ITU-T G (2007)/Amd.5 (04/2010)

7 Table 2 Mandatory carrier sets xdsl Recommendation(s) ITU-T G Annexes C/H/I ITU-T G Annex C ITU-T G Annex C ITU-T G Annex C ITU-T G where support of a profile requiring US0 (Note 4) Carrier set designation C43 ITU-T G Annexes J/M ITU-T G Annexes J/M ITU-T G Using multi-carrier modulation (except Annex C) ITU-T G where support of a profile not requiring US0 ITU-T G Annex C using multi-carrier modulation over POTS ITU-T G Annex C using multi-carrier modulation over ISDN-BA ITU-T G Using single-carrier modulation over POTS ITU-T G Using single-carrier modulation over ISDN-BA ITU-T G Using single-carrier modulation over TCM-ISDN J43 (Note 6) V43 V43P V43I V43P-S V43I-S V43-S NOTE 1 To be used where spectrum management forbids use of the downstream carrier set A43, typically where ITU-T G or ITU-T G is deployed from a cabinet. NOTE 2 To be used where spectrum management forbids use of the downstream carrier set J43, typically where ITU-T G is deployed from a cabinet. NOTE 3 To be used where spectrum management forbids use of the downstream carrier set B43, typically where ITU-T G is deployed from a cabinet. NOTE 4 At least one of the carrier sets A43, B43, and C43 shall be transmitted, depending on the US0 band supported. NOTE 5 If multimode operation is supported, the HSTU shall transmit the carrier sets corresponding to all enabled modes simultaneously. NOTE 6 If ITU-T G or ITU-T G Annex B is also supported by the HSTU-R, the upstream carrier set J43 shall be optional and it should not be transmitted, as it can interfere with ISDN present on the same line. In this case, the carrier set B43 shall be transmitted. In previous versions of ITU-T G.994.1, the J43 carrier set was mandatory. Therefore, HSTU-C implementing a previous version of ITU-T G may not respond appropriately. 2) Addition of codepoints for ITU-T G Change existing Table to: Table Standard information field ITU-T G SPar(2) coding Octet 2 Bits x x x x x x x 1 x x x x x x 1 x x x x x x 1 x x x x x x 1 x x x x x x 1 x x x x x x 1 x x x x x x x ITU-T G SPar(2)s Octet 2 Annex A US0 Annex B US0 Annex C US0 ITU-T G Reserved for allocation by ITU-T Reserved for allocation by ITU-T No parameters in this octet Rec. ITU-T G (2007)/Amd.5 (04/2010) 3

8 Add new Table as follows: Table Standard information field ITU-T G ITU-T G NPar(3) coding Octet 1 Bits ITU-T G Vectoring NPar(3)s Octet 1 x x x x x x x 1 Downstream vectoring x x x x x x 1 x Upstream vectoring x x x x x 1 x x Reserved for allocation by ITU-T x x x x 1 x x x 1 x x x 1 x x x x No parameters in this octet 3) Addition of codepoints for ITU-T G Modify Table 11.x.0.3 with x=30,32,34,36,44,46,48,50,52,58 as follows: Table 11.x.0.3 Standard information field ITU-T G.992.3/5 Annex XXX SPar(2) coding Octet 4 Bits ITU-T G.992.3/5 Annex XXX SPar(2)s Octet 4 x x x x x x x 1 Downstream PMS-TC latency path #0 supported x x x x x x 1 x Upstream PMS-TC latency path #0 supported x x x x x 1 x x Downstream ATM TPS-TC #0 RETX x x x x 1 x x x Downstream PTM TPS-TC #0 RETX x x x 1 x x x 1 x x x x No parameters in this octet 4 Rec. ITU-T G (2007)/Amd.5 (04/2010)

9 Add Tables 11.x.57 and 11.x.58 for the set x=30,32,34,36,44,46,48,50,52,58 as follows: Table 11.x.57 Standard information field ITU-T G.992.3/5 Annex XXX downstream ATM TPS-TC #0 RTX NPar(3) coding Bits ITU-T G.992.3/5 Annex XXX downstream ATM TPS-TC #0 RTX NPar(3) x x x Reserved for allocation by ITU-T Table 11.x.58 Standard information field ITU-T G.992.3/5 Annex XXX downstream PTM TPS-TC #0 RTX NPar(3) coding Bits ITU-T G.992.3/5 Annex XXX downstream PTM TPS-TC #0 RTX NPar(3) x x x 64/65-octet encapsulation with short packets x x x 64/65-octet encapsulation with pre-emption x x x Reserved for allocation by ITU-T Rec. ITU-T G (2007)/Amd.5 (04/2010) 5

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12 SERIES OF ITU-T RECOMMENDATIONS Series A Series D Series E Series F Series G Series H Series I Series J Series K Series L Series M Series N Series O Series P Series Q Series R Series S Series T Series U Series V Series X Series Y Series Z Organization of the work of ITU-T General tariff principles Overall network operation, telephone service, service operation and human factors Non-telephone telecommunication services Transmission systems and media, digital systems and networks Audiovisual and multimedia systems Integrated services digital network Cable networks and transmission of television, sound programme and other multimedia signals Protection against interference Construction, installation and protection of cables and other elements of outside plant Telecommunication management, including TMN and network maintenance Maintenance: international sound programme and television transmission circuits Specifications of measuring equipment Terminals and subjective and objective assessment methods Switching and signalling Telegraph transmission Telegraph services terminal equipment Terminals for telematic services Telegraph switching Data communication over the telephone network Data networks, open system communications and security Global information infrastructure, Internet protocol aspects and next-generation networks Languages and general software aspects for telecommunication systems Printed in Switzerland Geneva, 2010